A certain half-reaction has a standard reduction potential E-=-0.77 V. An engineer proposes using this half-reaction at the cathode of a galvanic cell thamust provide at least 1.30 V of electrical power. The cell will operate under standard conditions.Note for advanced students: assume the engineer requires this half-reaction to happen at the cathode of the cellIs there a minimum standard reduction0=vyes, there is a minimum.Epotential that the half-reaction used atredthe anode of this cell can have?If so, check the "yes" box and calculatethe minimum. Round your answer to 2decimal places. If there is no lowerlimit, check the "no" boxXno minimumIs there a maximum standard reduction0Ered3 ПvO yes, there is a maximumpotential that the half-reaction used atthe anode of this cell can have?If so, check the "yes" box and calculatethe maximum. Round your answer to 2mal places. If there is no upperlimit, check the "no" boxno maximumBy using the information in the ALEKSData tab, write a balanced equationdescribing a half reaction that could beused at the anode of this cellNote: write the half reaction as it wouldactually occur at the anode. Ag (aq)e- Ag (s)Al3+ (aq) 3e Al (s)0.7996-1.676Au (aq) e" Au (s)1.692Au3+ (aq) 3eAu (s)1.498Ba2+ (aq)2eBa (s)-2.912Br2 ()2e - 2Br (aq)1.066Ca2+ (aq)2e -- Са (s)-2.868Cl2 (g)2e » 2Cl (aq)1.35827Co2+ (aq) 2eCo (s)-0.28Co3+ (aq) e- Co2+ (aq)1.92Cr2+ (aq) 2eCr (s)-0.913Cr3+ (ag) 3e Cr (s)-0.744Cr3+ (aq) e- Cr2+ (aq)-0.407CrO42- (aq) 4H20 (I) +3eCr(OH)3 (s)50H- (aq)-0.13Cu2+ (aq)2e-Cu (s)0.3419Cu2+ (aq) e Cu (aq)0.153Cu (aq)e-Cu (s)0.521F2 (g)2e 2F (aq)Fe2+ (aq)2e2.866Fe (s)-0.447Fe3+ (aq)e"- Fe2+ (aq)0.771Fe3+ (aq) 3eFe (s)-0.0372H+ (aq) 2eH2 (g)0.0002H20 ()2e- H2 (g) + 20H (aq)-0.8277

Question
Asked Nov 16, 2019
20 views

If you need the rest of the question let me know 

A certain half-reaction has a standard reduction potential E-
=-0.77 V. An engineer proposes using this half-reaction at the cathode of a galvanic cell tha
must provide at least 1.30 V of electrical power. The cell will operate under standard conditions.
Note for advanced students: assume the engineer requires this half-reaction to happen at the cathode of the cell
Is there a minimum standard reduction
0
=v
yes, there is a minimum.
E
potential that the half-reaction used at
red
the anode of this cell can have?
If so, check the "yes" box and calculate
the minimum. Round your answer to 2
decimal places. If there is no lower
limit, check the "no" box
X
no minimum
Is there a maximum standard reduction
0
E
red
3 Пv
O yes, there is a maximum
potential that the half-reaction used at
the anode of this cell can have?
If so, check the "yes" box and calculate
the maximum. Round your answer to 2
mal places. If there is no upper
limit, check the "no" box
no maximum
By using the information in the ALEKS
Data tab, write a balanced equation
describing a half reaction that could be
used at the anode of this cell
Note: write the half reaction as it would
actually occur at the anode.
help_outline

Image Transcriptionclose

A certain half-reaction has a standard reduction potential E- =-0.77 V. An engineer proposes using this half-reaction at the cathode of a galvanic cell tha must provide at least 1.30 V of electrical power. The cell will operate under standard conditions. Note for advanced students: assume the engineer requires this half-reaction to happen at the cathode of the cell Is there a minimum standard reduction 0 =v yes, there is a minimum. E potential that the half-reaction used at red the anode of this cell can have? If so, check the "yes" box and calculate the minimum. Round your answer to 2 decimal places. If there is no lower limit, check the "no" box X no minimum Is there a maximum standard reduction 0 E red 3 Пv O yes, there is a maximum potential that the half-reaction used at the anode of this cell can have? If so, check the "yes" box and calculate the maximum. Round your answer to 2 mal places. If there is no upper limit, check the "no" box no maximum By using the information in the ALEKS Data tab, write a balanced equation describing a half reaction that could be used at the anode of this cell Note: write the half reaction as it would actually occur at the anode.

fullscreen
Ag (aq)e- Ag (s)
Al3+ (aq) 3e Al (s)
0.7996
-1.676
Au (aq) e" Au (s)
1.692
Au3+ (aq) 3e
Au (s)
1.498
Ba2+ (aq)2e
Ba (s)
-2.912
Br2 ()2e - 2Br (aq)
1.066
Ca2+ (aq)2e -
- Са (s)
-2.868
Cl2 (g)2e » 2Cl (aq)
1.35827
Co2+ (aq) 2e
Co (s)
-0.28
Co3+ (aq) e- Co2+ (aq)
1.92
Cr2+ (aq) 2e
Cr (s)
-0.913
Cr3+ (ag) 3e Cr (s)
-0.744
Cr3+ (aq) e- Cr2+ (aq)
-0.407
CrO42- (aq) 4H20 (I) +3e
Cr(OH)3 (s)
50H- (aq)
-0.13
Cu2+ (aq)2e-
Cu (s)
0.3419
Cu2+ (aq) e Cu (aq)
0.153
Cu (aq)e-Cu (s)
0.521
F2 (g)2e 2F (aq)
Fe2+ (aq)2e
2.866
Fe (s)
-0.447
Fe3+ (aq)e"- Fe2+ (aq)
0.771
Fe3+ (aq) 3e
Fe (s)
-0.037
2H+ (aq) 2e
H2 (g)
0.000
2H20 ()2e- H2 (g) + 20H (aq)
-0.8277
help_outline

Image Transcriptionclose

Ag (aq)e- Ag (s) Al3+ (aq) 3e Al (s) 0.7996 -1.676 Au (aq) e" Au (s) 1.692 Au3+ (aq) 3e Au (s) 1.498 Ba2+ (aq)2e Ba (s) -2.912 Br2 ()2e - 2Br (aq) 1.066 Ca2+ (aq)2e - - Са (s) -2.868 Cl2 (g)2e » 2Cl (aq) 1.35827 Co2+ (aq) 2e Co (s) -0.28 Co3+ (aq) e- Co2+ (aq) 1.92 Cr2+ (aq) 2e Cr (s) -0.913 Cr3+ (ag) 3e Cr (s) -0.744 Cr3+ (aq) e- Cr2+ (aq) -0.407 CrO42- (aq) 4H20 (I) +3e Cr(OH)3 (s) 50H- (aq) -0.13 Cu2+ (aq)2e- Cu (s) 0.3419 Cu2+ (aq) e Cu (aq) 0.153 Cu (aq)e-Cu (s) 0.521 F2 (g)2e 2F (aq) Fe2+ (aq)2e 2.866 Fe (s) -0.447 Fe3+ (aq)e"- Fe2+ (aq) 0.771 Fe3+ (aq) 3e Fe (s) -0.037 2H+ (aq) 2e H2 (g) 0.000 2H20 ()2e- H2 (g) + 20H (aq) -0.8277

fullscreen
check_circle

Expert Answer

Step 1

The relation (1) provides the formula for calculating the electrode potential of a cell and the relation (2) describes the dependence of the standard free energy change on the standard cell potential. In these equations, E0cell is used for standard cell potential, E0c is used for the standard reduction potential at the cathode, E0a is used for the standard reduction potential at the anode, n is the number of electrons transferred, F is Faraday’s constant and ΔG is the standard free energy change.

ЕФ — Е? - Е;
(1)
'cell
AG=-nFE
(2)
'cell
help_outline

Image Transcriptionclose

ЕФ — Е? - Е; (1) 'cell AG=-nFE (2) 'cell

fullscreen
Step 2

(i)

For a reaction to be spontaneous, the free energy change of the reaction must be negative. From equation (2), the value of standard free energy change will be negative, if the value of standard cell potential is positive. Therefore, the value of E0cell should be positive for a reaction to be spontaneous.

For the given galvanic cell, the electrode potential of the cell should be atleast 1.30 V and the reduction potential at the cathode is -0.77 V.

For this reaction to be spontaneous, there will be no minimum value for the reduction potential at the anode because a greater magnitude of negative value of E0a leads to the increase in positive value of E0cell as per the relation given in equation (1).

Step 3

(ii)

The maximum value for the electrode potential at the ano...

1.30 V -0.77 V - E
а
Е --0.77 V -1.30 V
a
=-2.1 V
help_outline

Image Transcriptionclose

1.30 V -0.77 V - E а Е --0.77 V -1.30 V a =-2.1 V

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: Use only 1 decimal point (X.X) for all atomic weights. What will be the final molarity of 5.00 mL of...

A: Given :M1 = molarity of Nitric acid initially = 14     MV1  = Initial volume of Nitric acid = 5 m LM...

question_answer

Q: Calculate the change in entropy round to two sig figs. Answer should be J/k and be around ten to the...

A: Given,Possible sites = 100.One Br atom is adsorbed on to the surface.  The number of ways both Cl an...

question_answer

Q: Indicate the type of solute-solvent interaction (Section 11.2) that should be most important in each...

A: a:(a) CCl4 in benzeneCCl4 is a polar solute while C6H6 is non-polar solvent. CCl4 and benzene are no...

question_answer

Q: In the following reaction C6H12O6(s) + 6O2(g) ➞ 6CO2(g) + 6 H2O(l) if 28 g of Glucose, C6H12O6, are ...

A: Number of mol of glucose reacted = given mass / molar mass = 28 g / 180 g/mol = 0.155 molNumber of m...

question_answer

Q: If you are provided with 10 molecules of hydrogen and 10 molecules of oxygen, which reactant is the ...

A: The limiting reagent is a substance that is consumed totally when the chemical reaction is complete....

question_answer

Q: Consider the following statements as they apply to quantum numbers. Decide if each statement is True...

A: Given statements,Electrons in an s atomic orbital are the least shielded by electrons in other orbit...

question_answer

Q: An unknown food-dye is analyzed by the method used in this experiment. The absorbance of 5 standard ...

A: Given information:Absorbance (A) = 0.55A straight line with equation Abs = 4.850x + c

question_answer

Q: a sample of NH3 is added to an initially evacuated 2.00L flask at 125 degree celsius, until the pres...

A: The balanced reaction of ammonia and oxygen can be given as

question_answer

Q: The bright-red color of highway safety flares comes from strontium ions in salts such as Sr(NO3)2 an...

A: The relationship between wavelength and energy is given as: